High-voltage power line carrier signal communication coupling method and device

Abstract

The invention relates to a high-voltage power line carrier signal communication coupling method and a device. The device comprises two groups of semi-annular transformers, wherein one group is current transformers, and the other group is carrier transformers; each group is divided into an upper half part and a lower half part which are respectively arranged in the upper casing and the lower casing of a high-voltage transmission line; and two semi-annular transformers in the upper casing are respectively wound by coils which are connected with a circuit board arranged at the upper side. When the upper casing provided with the two semi-annular transformers is combined with the lower casing provided with two semi-annular transformers to clamp on the high-voltage power line, the transformers are respectively form complete current transformers and carrier transformers; the high-voltage line penetrates through the center of a magnetic circuit to generate electric current which is used for supplying power for equipment after being converted; and the carrier transformers are used for coupling carrier signals to the high-voltage power line or inducing carrier signals from the high-voltage power line, and the carrier signals are transmitted to ground equipment in a wireless mode. The invention solves the problem of difficult insulation and isolation between the ground equipment and the high-voltage power line, realizes remote meter-reading at low voltage, and saves cost.

Description

technical field [0001] The invention relates to a method and a device for coupling a carrier signal to a high-voltage transmission line. Background technique [0002] With the improvement of power grid management requirements, the requirements for remote power data collection are becoming more and more urgent. Low-voltage power line carrier communication technology has been widely used, but due to the technical and cost constraints of high-voltage isolation coupling, the application of carrier communication technology on 10kV and above lines is very limited. [0003] The current high-voltage carrier coupling almost uses a combination of high-voltage capacitors and combined filters for signal coupling. Since the carrier equipment is directly connected to the high-voltage line, it is necessary to solve the high-voltage technology, resulting in high equipment prices, bulky, complicated installation, and easy to cause lightning strikes. and other disadvantages. As a result, th...

AI Technical Summary

Problems solved by technology

Low-voltage power line carrier communication technology has been widely used, but due to the limitation of high-voltage isolation coupling technology and cost, the application of carrier communication technology on 10kV and above lines is very limited

[0003] The current high-voltage carrier coupling almost uses a combination of high-voltage capacitors and combined filters for signal coupling. Since the carrier equipment is directly connected to the high-voltage line, it is necessary to solve the high-voltage technology, resulting in high equipment prices, bulky, complicated installation, and easy to cause lightning strikes. and other disadvantages

As a result, the application of power carrier communication of 10kV and above is restricted and cannot be popularized and applied

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